Various works investigated the possible observational signatures of wormholes. They include studies of the shadow [1]}, [2]}, [3]}, gravitational lensing [4]}, [5]}, Lense-Thirring precession [6]}, accretion disk radiation [7]}, iron line profile [8]}, and quasinormal modes [9]}. It was demonstrated that in some phenomena wormholes can mimic closely the Kerr black hole, while in others they possess distinctive features. Since it is hard to distinguish wormholes from black holes in certain experiments, being familiar with a broader set of characteristic effects will be useful for their identification.
